Where Cool Waters Flow is a book about canoe guiding culture around Grand Lake Stream, a town in northeastern Maine. First-person author Randy Spencer is interviewed here by Keith Shortall on Maine Public Broadcasting Network.
Grand Lake Stream is where the Grand Laker canoe was born. This is a large, square-stern, cedar-and-canvas canoe designed for use with a small outboard on the transom.
I haven't yet read Where Cool Waters Flow, but it's on my reading list.